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Qxy v1

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Summary

Performs the final part of a SANS (LOQ/SANS2D) two dimensional (in Q) data reduction.

See Also

Q1D

Properties

Name

Direction

Type

Default

Description

InputWorkspace

Input

MatrixWorkspace

Mandatory

The corrected data in units of wavelength.

OutputWorkspace

Output

MatrixWorkspace

Mandatory

The name to use for the corrected workspace.

MaxQxy

Input

number

Mandatory

The upper limit of the Qx-Qy grid (goes from -MaxQxy to +MaxQxy).

DeltaQ

Input

number

Mandatory

The dimension of a Qx-Qy cell.

IQxQyLogBinning

Input

boolean

False

I(qx,qy) log binning when binning is not specified.

PixelAdj

Input

MatrixWorkspace

The scaling to apply to each spectrum e.g. for detector efficiency, must have just one bin per spectrum and the same number of spectra as DetBankWorkspace.

WavelengthAdj

Input

MatrixWorkspace

The scaling to apply to each bin to account for monitor counts, transmission fraction, etc. Must be one spectrum with the same binning as the InputWorkspace, the same units (counts) and the same [[ConvertToDistribution|distribution status]].

AccountForGravity

Input

boolean

False

Whether to correct for the effects of gravity.

SolidAngleWeighting

Input

boolean

True

If true, pixels will be weighted by their solid angle.

RadiusCut

Input

number

0

The minimum distance in mm from the beam center at which all wavelengths are used in the calculation (see section [[Q1D#Resolution and Cutoffs|Resolution and Cutoffs]])

WaveCut

Input

number

0

The shortest wavelength in angstrom at which counts should be summed from all detector pixels (see section [[Q1D#Resolution and Cutoffs|Resolution and Cutoffs]])

OutputParts

Input

boolean

False

Set to true to output two additional workspaces which will have the names OutputWorkspace_sumOfCounts OutputWorkspace_sumOfNormFactors. The division of _sumOfCounts and _sumOfNormFactors equals the workspace returned by the property OutputWorkspace

ExtraLength

Input

number

0

Additional length for gravity correction.

Description

This algorithm rebins a 2D workspace in units of wavelength into 2D Q. The reduction it performs is the same as that executed by the Q1D v2 algorithm, expect performed in 2D instead of 1D. Hence, for further documentation on how this algorithm works please see Q1D v2.

Categories: AlgorithmIndex | SANS

Source

C++ header: Qxy.h

C++ source: Qxy.cpp